fixing compilation

opt-pilot/CMakeLists.txt

@@ -71,6 +71,10 @@ find_package (H5hut REQUIRED)
 find_package (HDF5 REQUIRED)
 find_package (GSL REQUIRED)
 find_package (Trilinos REQUIRED HINTS $ENV{TRILINOS_PREFIX} $ENV{TRILINOS_DIR} $ENV{TRILINOS})
+ELSE ()
+    include_directories(${CMAKE_SOURCE_DIR}/src)
+    include_directories(${CMAKE_SOURCE_DIR}/src/Classic)
+    include_directories(${CMAKE_SOURCE_DIR}/ippl/src)
 ENDIF (NOT OPTP_USED_FROM_OPAL)
 
 set(BOOST_ROOT $ENV{BOOST_HOME})
@@ -198,4 +202,4 @@ if (DOXYGEN_FOUND)
         WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
         COMMENT "Generating API documentation with Doxygen" VERBATIM
         )
-endif(DOXYGEN_FOUND)
+endif(DOXYGEN_FOUND)
\ No newline at end of file